1 . He made great progress and got several A+’s in the final exam. He hard at his lessons during the past few months.
| A．must have worked | B．ought to have worked |
| C．must work | D．ought to work |
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2 . The newly-released device is not well-received as expected. It ________ more practical and affordable.
| A．must have been | B．might have been | C．should have been | D．should be |
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3 . Her round figure, seen in the Tang Dynasty, ________ the admirable image.
| A．would have been considered | B．would have considered |
| C．had considered | D．must have been considered |
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